Delegate Coding Agent Tasks With Clear Boundaries

Delegating coding work to an agent is most effective when the task has a narrow goal, explicit limits, and a clear way to verify completion. Before you start, identify the repository and branch the agent should use, confirm your working tree is safe to change, and decide who will review and integrate the result.

What You’ll Need

• A specific coding task with an observable outcome.
• Access to the relevant repository, files, and development instructions.
• A clean or otherwise understood working tree, plus a branch or other safe workspace if available.
• Tests, build commands, or review criteria that can confirm the change.
• A way to communicate questions, report progress, and return the final diff.

Step-by-Step

1. Choose work that can be separated. Delegate a bounded change, such as adding validation to one form or fixing a reproducible bug in a particular module. Avoid assigning a broad outcome like “improve the app.” Check that the task does not depend on another unfinished change, and identify files or interfaces that other work is likely to touch.
2. Write the outcome in observable terms. Describe what should happen, not just what to edit. For example: “When the email field is empty, show the existing required-field message and prevent submission.” Include relevant context, reproduction steps, expected behavior, and links or paths to useful documentation. Do not assume the agent knows project-specific conventions.
3. Set explicit scope boundaries. State what the agent may change and what it must leave alone: permitted directories, APIs, data formats, dependencies, generated files, and unrelated behavior. Specify whether tests, documentation, or migrations are in scope. A useful boundary is concrete: “Change the parser and its unit tests; do not alter the public command-line flags or add dependencies.” If the work reveals a need to cross a boundary, require the agent to ask first.
4. Define the working environment. Provide the repository, target branch or isolated worktree, relevant setup instructions, and any required configuration that is safe to share. Say whether the agent may run commands, install dependencies, or access external services. Never supply secrets unnecessarily. Clarify that destructive commands, production access, publishing, deployment, and irreversible data changes require explicit human approval.
5. Set acceptance criteria and checks. List the behavior that must be true when the task is done, including important edge cases. Name the test or lint commands to run, if known, and say what to report if they cannot run. Distinguish required checks from optional suggestions. For example: “Add a test for an empty value; run the focused test and formatter; report any existing failures without trying to fix unrelated tests.”
6. Specify the handoff. Ask for a concise summary of the change, files touched, checks run and their results, known limitations, and any decisions that need review. Require a diff or commit in the agreed workspace rather than a claim that the task is complete. Make clear that you, not the agent, will decide whether to merge or release the change.
7. Agree on questions and checkpoints. Tell the agent when to pause: unclear requirements, conflicting instructions, missing access, unexpected files, failing baseline tests, or a necessary scope expansion. For larger tasks, request a short plan before implementation and a progress update at a useful milestone. Avoid constant status requests for a small, self-contained change.
8. Review the result independently. Inspect the diff for scope, correctness, security-sensitive changes, and accidental edits. Run the relevant checks yourself when practical, especially if the environment or reported results are uncertain. Compare behavior with the acceptance criteria, not just the agent’s summary. Approve, request a focused revision, or reject the change before integration.

Common Mistakes

• Giving a vague goal: “Clean up authentication” leaves too much room for interpretation. Identify the specific behavior or defect and what counts as done.
• Combining unrelated tasks: Bundling a bug fix, refactor, dependency update, and documentation rewrite makes review harder. Split work into independent tasks where possible.
• Leaving permissions implicit: An agent may interpret access as permission to change broad areas or run risky commands. State allowed actions and approval gates plainly.
• Confusing suggestions with requirements: Mark must-haves, preferences, and out-of-scope items separately so the agent does not treat every idea as mandatory.
• Accepting a summary without checking: A confident report does not prove that the right files changed or tests passed. Review the actual diff and verification results.

Tips

• Use a compact task brief: goal, context, in-scope files, exclusions, acceptance criteria, checks, and handoff.
• Point to existing patterns in the codebase instead of prescribing a new architecture without need.
• Ask for the smallest complete change. Smaller diffs are easier to understand, test, and revert.
• Separate discovery from implementation when the requirements are uncertain: first request findings and a proposed plan, then authorize changes.
• Keep human approval for changes with broad impact, such as public interfaces, data migrations, permissions, or deployment workflows.

Troubleshooting

The agent changed too much: Pause further edits, inspect the diff, and restate the boundary with specific paths or behaviors to preserve. Ask for unrelated changes to be removed rather than trying to infer which ones are safe.

The task is blocked by ambiguity: Ask the agent to list the unresolved questions and propose a conservative interpretation. Decide the expected behavior before authorizing more code; do not let guesses silently become product requirements.

Tests fail: Determine whether the failure existed before the task by checking the baseline or reproducing it on the original branch. Ask for focused diagnosis and a report. Do not expand the task into unrelated repairs without approval.

The agent reports success but the result is unclear: Request the exact diff, commands run, output or failure summary, and remaining limitations. Re-run important checks in the intended environment and review the changed files yourself.

Work overlaps with another change: Stop integration and compare the affected files or interfaces. Coordinate ownership, rebase or separate the work as appropriate, and re-run checks after resolving conflicts.

Frequently Asked Questions

How small should a delegated coding task be?
Small enough to describe with one clear outcome and review as a coherent diff. Split work when parts have different goals, owners, or approval needs.

Should an agent make a plan before coding?
For a familiar, low-risk task, a concise brief may be enough. Ask for a plan first when requirements are uncertain, changes span several areas, or scope needs approval.

Can I let a coding agent commit changes?
That depends on your workflow. If commits are allowed, specify the target branch and commit expectations. Keep review and merge approval separate unless your process explicitly grants more authority.

What should I do if the agent needs to exceed scope?
Have it pause and explain why, what would change, and what alternatives exist. Approve a revised boundary explicitly before it proceeds.

How do I know whether the task is complete?
Check every acceptance criterion, inspect the diff, and verify the required tests or clearly recorded exceptions. A completion message alone is not sufficient.

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